How to get the Infobox data from Wikipedia?

Use the Mediawiki API through this Python library: https://github.com/siznax/wptools

Usage:

import wptools
so = wptools.page('Stack Overflow').get_parse()
infobox = so.data['infobox']
print(infobox)

Output:

{'alexa': '{{Increase}} 34 ( {{as of|2019|12|15|lc|=|y}} )',
 'author': '[[Jeff Atwood]] and [[Joel Spolsky]]',
 'caption': 'Screenshot of Stack Overflow in February 2017',
 'commercial': 'Yes',
 'content_license': '[[Creative Commons license|CC-BY-SA]] 4.0',
 'current_status': 'Online',
 'language': 'English, Spanish, Russian, Portuguese, and Japanese',
 'launch_date': '{{start date and age|2008|9|15}}',
 'logo': 'Stack Overflow logo.svg',
 'name': 'Stack Overflow',
 'owner': '[[Stack Exchange]], Inc.',
 'programming_language': '[[C Sharp (programming language)|C#]]',
 'registration': 'Optional',
 'screenshot': 'File:Stack Overflow homepage, Feb 2017.png',
 'type': '[[Knowledge market]]',
 'url': '{{URL|https://stackoverflow.com}}'}